A current $I$ is flowing through the loop. The direction of the current and the shape of the loop are shown in the figure. The magnetic field at the center of the loop is $\frac{\mu_0 I}{\pi R}$ times ............ (MA = R, MB = 2R, DMA = 90°)

Question

A current $I$ is flowing through the loop. The direction of the current and the shape of the loop are shown in the figure. The magnetic field at the center of the loop is $\frac{\mu_0 I}{\pi R}$ times ............ (MA = R, MB = 2R, DMA = 90^°)

$\frac{7}{16}$, but out of the plane of the paper

$\frac{7}{16}$, but into the plane of the paper

$\frac{5}{16}$, but out of the plane of the paper

$\frac{5}{16}$, but into the plane of the paper

Solution

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